XR16C872CQ EXAR [Exar Corporation], XR16C872CQ Datasheet - Page 11

• Manufacturer Part Number: XR16C872CQ
• Description: DUAL UART WITH 1284 PARALLEL PORT AND PLUG-AND-PLAY CONTROLLER
• Manufacturer: EXAR [Exar Corporation]

Rev. 1.00
Mapped with Address A8-A15:
* 1284 Port at 0x6F00-6F08 with IRQC,
* UART-A
* UART-B
CPU Bus
To
at 0x7F00-7F08 & IRQA
at 0x5F00-6F08 & IRQB
DREQ and DACK#
Figure 4, Manual Configuration Interface in Embedded Application
A8-A15
D R E Q
(1284 Port)
D A C K #
(1284 Port)
D 0 - D 7
A 0 - A 2
I O R #
I O W #
I O C H R D Y
T C
I R Q B
( U A R T - B )
I R Q A
( U A R T - A )
I R Q C
(1284)
G N D
V C C
DISCONTINUED
G N D
A E N #
I R Q 4
I R Q 7
D R E Q 3
D A C K 3 #
I R Q 3
M A N #
S 1
S 2
S 3
S 4
S 5
11
30-21
5-12
1 0 0
2-4
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1 9
2 0
9 9
9 1
8 0
7 9
7 8
7 4
1 8
1 7
1 6
1 5
1 4
9 2
9 3
9 4
9 5
9 6
9 7
8 9
8 8
8 7
8 6
8 1
8 5
8 4
8 3
8 2
Configuration
A 0 - A 2
A3-A10
XR16C872
Logic
Port
XR16C872
UART-A
UART-B
Parallel
1284
Port